Shock-absorber.



G. E. SHIPPEY.

SHOCK ABSORBER. APPLICATION FILED JULY 22, 190B.

Patented Aug. 10, 1909.

Ge 0/3 a 5 W1T1ESSES 77 7/ In I G. l/U x UNITED PATENT OFFICE.

stones 2. SHIPPEY, or Prr'rsrmm, MASSACHUSETTS.

snocicsssonnns.

Specification Letters Patent.

iatonted Aug. 10, 1909.

Application lied-Jul! 22, 1008. Serial No. 444,788.

' Absorbers for Sprin ehicles, of which the following is s.

specificotion.

.This inventum to devices for opposing resilient to the violent or undue oscillation of the sprix'ig-supported portion of moving vehicles} and has for'its articular object improved means for reicving the comings-springs from the shock and stmin of excessive agitation resulting from rough travel or richer-wise.-

The invention comprises principally oppositely disposed strips of resilient metal constructed to form a comprcssible'wedge inserted between or rollers, andappropriste memsior te cooperation and separate support of parts.

Reference is to had to the accompanydrawingi forming a part of this specifi cation, in 'ch corresponding parts are indicated by similar reference-characters in each of the views.

Fi 1 is a side elevation of sections-of a velu'c e, presenting anc'dge view oi a device, constructed'in accordance with the preferred form of my invention, ied thereon. Fig. 2 represents the parts 5 1mm in Fig. 1 in reversed position. Fig. 3 is a detail end view of the pin or roller 12; and'Fig .'4 is a, detail top view of the holder 3, showmg the ioning therein through which are project the sp s l and 2, in section.

Re string tojhe drawings, 1 1 indicates the axle of the carriage-portion, or under-body of the vehicle, upon which the s rings 10 for supporting the over-body, or re atively movab e portion, rest.

V 9 indicates a air of bridge clamps boitod to the axle and olding the carriage-spring in position thereon.

8 indicates an upright support for the springs l and 2 of my device which are secured at their lower ends to op site faces of the support at the top them-Po 3' means of a bolt 7, projected through coincident a erturcs provided in the several pa rts. he support 8 is constructed of a flat, inflexible piece of metal firmly secured nt its lower end to the underbody of the vehicle, preferably by means of the feet- 13 provided on either pro'ectin side thereof and projected between the bows of the clamps 9 and the sprin 10.

5 represents :1 section of the tame su portmg the over-body to which a holder 3, or the support of the rollers 12. is attached bv means of bolts 6 rejected through coinciderit .a' rtures pro'vi ed in the frame and holder.

e holder is preferably of a piece of sheet metal bent so as to resemble in edge view an inverted letter J, com rising a horimntally flange at t 1e top rovided cenare ly wit an opening 14 su iently large to admit of the 5 rings 1 and 2 projecting 'frecly therethrou'g' 1, and a free edge de miing from the said flange so as to form a acing gcmllel to the bod -port-i0n of the holder.

et-ween said free or and the body rtion of the holder are provided parallel r0 lers 12 adapted to bear upon the exterior facings of the springs 1 and 2 and mounted upon bear- -gms 4 which are secured to opposite sides of t e holder through nper'tums provided therein. Said rollers are each crmstructfll with four flat feces b and rounded corners a.

The springs 1 and 2 each consist of an elonted st of resilient metal secured at the ower en to the upri 1; support 8 in the manner aforesaid an pro ected upward throu htheo ningl4prov'i edin the top of the h der. he {roe ends of the springs are bent inward and downward at an acute angle. the tips being somewhat tapered to afford greater resiliency and adapted to bear movably against each other. This construction forces the free ends of the springs apart, causing the springs to be compressed centrally g the stationarv rollers 12.

As it as been found by experience that the efliciency of shock absorbers of the class referred to is cbiefi in relievin the rebound of the overbody o the vehicle it will be observed thut the springs of my device diverge chiefly from a central mt upward. A slight divergence, however, is intended to be iven to the rings from a. central poultowmvard, su cient to resist, in cooperation with the usual carriage-springs, thedownward movements of the overbod Tll'lS latter effect may be increased by t e insertion of a washer between the lower ends of the springs and the su port 8.

It ma. be observul that only one face of each rol or is opposed at any given time to the wear incident to friction of the sliding spring, and that the roller is rotated upon its c is normally submantially stationary.

Itis apparent that the'size and strength of the parts composing device are r0 r- .tioned to the we ht use of the vehici to which it is appli' while slight modifications cf the, referred formof construction describedm this specification may be made without departing from the spirit of my invention.

From the foregoing description it is deemed that the operation of the device will be a parent.

av ng lly described my invention, I

.claim as new, and desire to secure by Letters Patent,thefollowin .1. A shock absorber comprising separate, oppositely disposed resilient members, means, provided independently of said members,

or the support and spacing thereof, separate means provi a resilient contact of the members at one of the ends thereof, and means provided indripendently of the foreoing for-automatica y al'peplyuigI pressure to t c said mem rs,-.t ereby producing a, retarding effectupon the relative movements of the parts of the vehicle.

2. In avehicle ha T 8Pl'0g1BSS1V8 underbody and a superpgil i art movably supportedthereon, as ocka' rbercom rising a pod member composed o separate,oppositely-dis ,cooperative springs secured to lone of e above-mentioned parts of the vehicle, means, provided independently of saidwedge-shaped member, for adjustmg the thereof at their convergmg ends and-holding the same in fix spaced relation, and se ratestationary members secured to the ot er of said parts of the vehicle and adapted to e and automatically compress the sides 0 said wedgeshaped member, thereby producing a retarding efl'ect upon the relative movements of the parts of the vehicle.

3. In shock bsorbers, a wedge-shaped member comprising oppositely disposed springs secured together at corresponding ends, each of said s rings being provided at the opposite ends t ereof with inturned resilient arms adapted to bear yieldingly hainst each other, and stationary members apted to compress the sides of said wedgeshaped member moving relatively thereto.

4. In shock absorbers, a wedge shaped resilient member and separate independen tlysup rtedstationary rollers each provided wit four fiat, faces and ada ted to engage and automaticallycompress t e sides of said -fiist+mention'ed member moving relatively thereto.

5. In vehicles, the combination with a progressive underbody, a separate relatively movable overbody, and carriage-springs for the-support of the over-body, of a rigid u right support to one of said bodies of t e vehicle, a separate resilient wedgeshaped member attached to said upright support stationary parallelmembers provided with fiat-bearmgsurfacesoneithersideofsaidwedge-shaped member and adapted to com rose the same moving relativelythereto, an means for the sup ort of said. wed mpressing members to t e other of said bodies of the vehicle.

6. Retarding means, for the pin-pose described, comprising fixed s aced members moving relatively to and a apted to compress mterposed resilient longitudinally-extende'd'members having a resilient contact relation at one of their ends and a fixed relation at the other of their ends.

7. Retarding mechanism, for the urposo described, comprising oppositely isposed longitudinallfi-extended resilient members havm a res 'ent contact at one of their ends and a ed relation at the other of their ends, and means supported independently of said members for applying increasing pressure upon the resilient ends thereof in 0 position to the longitudinal movements of e same.

8. A shock absorber for the purpose described comprising oppositely-dis ed longitudinally-extended resilient mem having a fixed spaced relation at one of their ends and diverging outwardly at the other of their ends, auxiliary means yieldingly spreading the said diverging ends, an se arate means ada ted to com ress the said imaging ends w en moved atively thereto.

9. In shock absorbers, the combination with a support, oppositely-disposed longitudinally-extended resilient members secured to the support, and means for s acing said members, of separate indepen ently supported rotatable members fixed relatively to each other and provided with a plurality of wearing faces, said rotatable members being adjusted to cooperate with the said resilient members in such manner as to oppose the lo itudinal movements thereof.

testimony whereof I hereunto afllx my signature in presence of two witnesses. 

